RFC 8312: CUBIC for Fast Long-Distance Networks
Recent RFCs 2018-02-15
Summary:
CUBIC is an extension to the current TCP standards. It differs from
the current TCP standards only in the congestion control algorithm on
the sender side. In particular, it uses a cubic function instead of
a linear window increase function of the current TCP standards to
improve scalability and stability under fast and long-distance
networks. CUBIC and its predecessor algorithm have been adopted as
defaults by Linux and have been used for many years. This document
provides a specification of CUBIC to enable third-party
implementations and to solicit community feedback through
experimentation on the performance of CUBIC.